Internal-combustion engine



C. V. BEAN.

INTERNAL COMBUSTION ENGINE.

APPLICATION` FILED MAY 24, 1919.-

Patentcd Feb. 3, 1920 CHARLES V. BEAN, OF CSEY, LLINIS.

INTERNAL-COMBUSTIDN ENGINE.

To all whom it may concern Be it knovrn that I, CHARLES V. BEAN, a citizen of the United States, residing at (las-ey, in ,the county ot' Clark and State of Illinois, have invented new and useful Improvements in Internal-Conibustion Engines, of which the -following is a specification.

This invention relates to internal combustion engines, the object in view being to providea novel form of cylinder and piston whereby a more equal distribution ot' power is obtained on the piston avoiding what is known in the art as piston slam which is ordinarily produced by a greater explosive torce upon one side of the head otl the piston than upon the other side, causingr the piston to tilt` and then slam against the inside wall ot' the cylinder.

By means Aof' the construction herein described .and shown, the force of the impact against the piston is more evenly distributed around the peripheral portion or margin ot' the cylinder head. thereby overcomingr the tendency otl the piston to tiltl and slam. A further object ot' the invention is to provide a longer bearing between the piston and the connecting rod when said parts are connected together and further to provide for water cooling the inside wall of the rylinder within the open center ot' the piston. y

ll'ith the above and other objects in view,

the invention consists in the novel construction, combination and arrangement ot' parts herein fully described, illustrated and claimed.

ln the accompanvingf drawing:

Figure 1 is a diametrical,section through a cylinder and piston embodying the present inventi'on. y

Fig. Q is a similar view taken at a right angle to Fig. 1.

Figg is a horizontal section on the. line 3-f3 of Fig. 1.

Fig. l lis a horizontal section on the line Jf--l of Fig. 1.

In carrying out the present invention, I employ a cylinder embodying an outer wall 1 and an inner wall 2, said Walls being;r arranged in spaced concentric relation to each other as -clearly shown in the drawingr so as to provide an annular piston chamber 3. the saine being closed by the heads 4 and 5 at the opposite ends thereof.

Mounted for reciprocatory movement in Specicaton of Letters Patent.

Patented Application filed May 24, 1919. Serial Ho.

the cylinder above referred to is shaped piston 6 or in other words a siii j open center annular formation, being formed with annular fgrooves, in the inner and outer to respectively receive paci-tin' 8 designed to travel conteey .1 spective adjacent cylinder walls leakage and maintain the. necessary con..- pression in the combustion chambers 9 10 at opposite sides of the piston.

Ixtending diametr'ically the pis ton o is a piston pin 11 and the ivel 2 of the cylinder .is formed vv'ff. longitudinal gnideways or grooves mit ot the reciproeatory movement 'ot pin 11 as the piston 6 moves in a correspondingr direction. 13 designates the connecting rod which is attached at one end to the. pin 11 and atits other end to the crank shaft 11i of the engine. By reason of the construction just described it wili be seen that an unusuallylong1 bearing 15 may be provided between the connecting rod 13 and the piston pin 11. Thistogether with the annular formation ot the piston and the combustion chamber ot' the cylinder provides for an equal distribution ot' the explosive force against the piston.

The construction shown and described also provides for a sectonshaped Water jacket 16 within the inner viali of cylinder as shown inA 3. This enabes the inner wall, as well as the outer the cylinder to be water cooled, it being understood that a water jacket be placed around the outer wall of the cyl,-v inder in the usual internal coinbustion en gine practice. Furthermore. the air may circulate freely back and forth through the center of the piston and, of course, back and forth within the inner tubular wall 2 of the cylinder. The engine is `thus prevented. from' over-heatingr and is kept in a cool and cient condition' at all times.

Having thus described the invention, what is claimed as new, is v 1. In an internal combustion engine, a. cylinder having Aouter and inner Walis in spaced relation to each other forming an pin for tha connecting rod, the cylinder hnvposit@ sidvs of ith@ piston, :1nd a ring shaped ing slots in Which said pin works. open center pislfon working in said annular 10 2. In an internal cmnbustion engine, n piston chaunber and lnwing` :l dininetrical Cylinder having outer and inner walls in pisinn pin for the connecting rod. the cylin- -spaced relation to euch other forming an der having slots in which said pin \\0rks,tlm,

annular piston Chamber, heads :it opposite inner wall of the cylindfr lmving internal ends 0f sand cyllnder forn'nng 1n conjuncsector shaped water Jznkets. tion therewith conlbnstlon chambers :1t 0p- CH ARLES Y. BFN. 

